BB Link synch problems with Outlook

When syncing my Outlook 2010 address with my Q10, about 10% of the addresses are messed up.
Sometimes another familyname, other phone numbers, .....
it's a mess and I have no clue where it goes wrong.
Have deleted my BB address book, am only doing syncing from laptop to BB, not bi-directional as that messes up my Outlook addresses too.
Anyone a clue????